Foam cushion base



FIG. 1 is a perspective view of a foam cushion base;

FIG. 2 is a front side view of the foam cushion base shown in FIG. 1; the rear side view being a minor image thereof;

FIG. 3 is a top view of the foam cushion base shown in FIG. 1; the bottom view being a minor image thereof; and,

FIG. 4 is a right side view of the foam cushion base shown in FIG. 1; the left side view being a minor image thereof.

The break lines shown in the drawings indicate no specific length or width and form no part of the claimed design. The broken lines shown in the drawings are for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for foam cushion base, as shown and described. 